Bug#1059792: pytango build-depends on python3-all-dev, but only builds for the default python3 version, also installs C extension three times

[Matthias Klose]

Package: src:pytango
Version: 9.5.0-1~exp1
Severity: important
User: debian-python at lists.debian.org
Usertags: python3.12

pytango build-depends on python3-all-dev, but only builds for the 
default python3 version. If you don't build for all supported python3 
versions, just build-depend on python3-dev.

Also the build system installs the library three times:

-rw-r--r-- root/root     10490 2023-12-21 21:24 
./usr/lib/python3/dist-packages/tango/__init__.py
-rw-r--r-- root/root   5497288 2023-12-21 21:24 
./usr/lib/python3/dist-packages/tango/_tango.cpython-311-x86_64-linux-gnu.so
-rw-r--r-- root/root   5497288 2023-12-21 21:24 
./usr/lib/python3/dist-packages/tango/_tango.so.9
-rw-r--r-- root/root   5497288 2023-12-21 21:24 
./usr/lib/python3/dist-packages/tango/_tango.so.9.5.0

Please just ship the C extension, nothing else.